Internal-combustion engine.



J. A. KREMER.

INTERNAL COMBUSTION ENGINE,

AAPPLICATION FILED 1AN.2.1915.

1,172,612. Patented 1910.211916.

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J. A. KREMER.

INTERNAL c oNnsusnoN ENGlNE. APPLICATION FILED IAN. 2. I9I5.

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Patented Feb. 22, 1916.

IQ I'/I- To all whom z't 'may concern.'

UNITED sTArEs PATENT OFFICE.

JOHN ANDREW KREMER, OE AURORA, ILLINOIS.

INTERNAL-COMBUSTION ENG-INE.

Be it known -that 1,' JOHN ANDREW KREMER, a citizen of the UnitedStates, re-

siding at Aurora, in the county of Kane and State of Illinois, haveinvented a'new and useful Internal-Combustion Engine; and I do herebydeclare the following to be a full, clear, and exact description of theinvention such as will enable others skilled in the arf to which itappertains to make and use'the same.

ternal combustion engine.,

As an object of the invention it is the aim to provide a single pistonvalve internal combustion motor, which can be .installed and constructedin such wise as' to reduce the time, labor and material to a minimum.

Another object of the invention is to improve and simplify theconstruction of such motor, and-to provide ball bearing mountings forthe crank shaft and crank connection, and the eccentric shaft, `so as tolessen the friction of said parts.

One of the features of the invention is'to so construct and connect thecylinder to the frame of the engine, as to permit the parts to be easilyand quickly assembled or disassembled with a. minimum amount of laborand time.

Another object of the invention is to provide improved means ofconnecting between the piston and the pitman rod of the crank, so as torelieve the crank and the pitma-n rod of the sudden jar or impactincident to .the explosion of the charge.

In practical fields the details of construction may necessitate.alterations, falling within the scope of what is claimed. l

The invention comprises further features and combination of parts, ashereinafter set I forth, shown in the drawings and claimed.

In the`drawings:-Figure 1 is a View 1nside elevation showing the motorconstructed on a horizontal plane. Fig. 2 is a longitudis nal sectionalView; Fig. 3 is a cross sectional view through the frame, showing howthe frame is. connected to the base. Fig. 4 is a horizontal sectionalview through the connection between the piston and the pitman rod. Fig.5 is a sectional view showing the 'engine constructed as a verticalmotor.

Referring to the drawings, more particularly to Figs. 1 and 2, thenumeral '-1 designates thebase, the forward ortion of which is providedwith s. dove-tailed recess2 for Specification of Letters Patent.

This invention relates to an improved inthe reception of a dove-tailedpart 3 of the forward supportingv standard 4, which supports the forwardend of the cylinder 5.

The rear portion of the base l is provided.y with elongated dove-tailedgrooves or recesses 6 for the reception of the lower part 7.of the sides8 ,of the frame of the motor. The end portion 9 of the cylinder 5 isconstructed with arlange 10, through which Patented Feb. 22, 1916.Application led January 2, 1915. Serial No. 140.

ily assembled and disassembled, aswell as easily and quickly permittingthe other parts of the motor to be disassembled or assembled.

Mounted in ball bearings 14 of the sides of the frame is a crank shaft15 provided with a crank' 17 and a sprocket 18 at one end, which iskeyed at 19 to said shaft. Also mounted in ball bearings 20 of the sidesofsaid frame is a shaft 21 having an eccentric 22 and a spur gear 23. Asprocket chain- 2 4 passes about the sprocket 23v and the sprocket 1S asshown. The cylinder 5l is provided with a combustion chamber 26, therebeing inlet and exhaust from the combustion chamber to the piston valvechamlber 27, said inlet and exhaust ports being designated by thenumerals 28 and 29. The head' 30 of the cylinder has the usual sparkingplug 31. The mixture enters the piston valve chamber from any suitablesource (not shown), through the intake port 32, while' the utilized'gases pass from the cylinder 27 to the atmosphere through the exhaustvport piston valve casing 27` Mounted in the is a piston 34, the rod 35of which passes through the p'acking box 36 and is connected at 37 tothe pitman rod 38, which is pro- `vided with an eccentric strap39,'engaging about the eccentric 22.

The piston 41 in the cylinder 5 is' of the usual hollow construction,and provided with the usual piston rings 42,. Theopposite'sides of theinterior of the hollow7 piston 41 'are provided with guides 43 toreceive the member 44,- there being upon the opposite sides of eachmember stout coil springs 45, which engage the end of each guide,-thereby yieldably mounting said members. Journaled in the members is apivot pin 46, on which sleeves 47 are mountwhieh hold the Pitman rod 48substantially centered upon the pivot pin. The pitman rod 48 is in turnconnected to the crank of the crank shaft, by means of ball bearingconnections. as shown at 50, the cap plate 5l acting to hold the partsin their proper places. It will be observed that as the charge isignited, the yieldable connections between the pitman 4S and the pistonof the cylinder 5 will relieve the sudden jar or impact be tween thepitnran and the crank shaft.

Referringr lo Fig. 2 4it is to be understood that a charge has beentired. the piston -tl having been fori-ed to the position shown in fulllines,-the piston ZH having been moved as shown also in 'full line 'l`hemomentlnn carries .the piston -ll forwardly, thereby fort-iin.l theremaining` utilized gases through the exhaust; 2S), the piston 3J:having been moved to the dotted line position y. Then when the pieton-ll travels back again, the port is uncover-ech and a chairgre is drawnfrom behind the piston 34 into the combustion chamber, thel piston 3l*having;r been moved to the dotted line position S. rl`he piston l1 thentravels forward again and compresses the charge7 and at the saine timeMhb piston Je moves back to the dotted line l position y, elosinr theport Q8. Immediately following;l the compression of the charge thecharge is ignited, forcing the pieton 4l backwardly, and in so doing-theport Q9 is uny covered, by the piston 34: niovingto the tall' lineposition, thereby allowing the utilized gases to escape. 'lfheee cycles;ol operations are consecutively repeated. ae the engine con- 35tinuousl)Y operates.

The invention having been set forth;l what ie claimed as' ne and usefulim# ln an internal combustion engine. a piston. therefor operable `inthe eomlmstion 40 chamber ot' Said engine, said `piston beingeylimlrieal and hollow yand having one end open. the other end closed,the interior wall of the hollow piston havingdiametrieallvoppo5ite'elongated guide grooves machined iin 45 the wall. membersmounted in the guide lirl'ooves. coil springs upon opposite sides oliaeh member and cooperatingwith the end` walls of the grnide groove. apivot `pin having iteA opposite ends littingr in said member, `i sleeveson the pin,I and avpltman plvoled to I

